It may be possible to do so as an allowable business investment loss (ABIL). You can contact the CRA and ask if it is possible to do so in your situation. If you are in Canada or the United States, you can call the CRA at 1-800-959-8281. If you are elsewhere, you can call 613-940-8495. This page has more ways to contact the CRA: Contact the Canada Revenue Agency
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